Internet Quiz

Question 1A 48 MB file crosses a steady 12 Mbit/s connection. Use 1 byte = 8 bits and decimal mega units, ignoring overhead. Find transfer time in s, rounded to one decimal place.

Enter a number in s.

Answers within 0.05 s of the expected value are accepted.

Question 2A router receives a packet for a distant network. How does it choose where to send it next?

It retrieves the entire web page before selecting an exitIt matches the destination against routing informationIt asks the destination’s owner to approve each intermediate hopIt reads the message topic to decide the recipient’s identity

Question 3Someone uses email but opens no websites. What relationship does that illustrate?

The Web is one service using the broader InternetA web page must be displayed before an email message travelsThe Internet is a browser feature used to display the WebEmail travels on a separate worldwide physical network

Question 4A fraudulent site uses HTTPS successfully. What protection does that connection provide?

Concealment of the page’s contents from the server receiving itEncryption and authentication of the connection’s endpointProof that the business behind the site is honestRemoval of harmful files offered by the authenticated server

Question 5Web and mail servers share one IP address. What helps incoming traffic reach the intended service?

A second domain spelling that replaces the transport endpointA new IP address required for each application on the hostA transport port associated with the listening applicationA filename extension that selects the listening process

Question 6During an upload, a photo travels across a shared network in many separately handled pieces. What do these pieces illustrate?

Dedicated physical wires reserved for separate parts of the photoSeparate copies of the full image identified by different namesEncrypted files that routers must open before forwardingPackets carrying portions of data with forwarding information

Question 7A file transfer loses connectivity long enough for its connection to fail. What determines whether downloading resumes from the saved point?

The continued presence of Wi-Fi bars throughout the outageA DNS entry that stores the byte position of each downloadThe network’s obligation to retain disconnected sessions foreverA recovery feature implemented by both communicating endpoints

Question 8Packets arrive out of order and one is lost during a TCP transfer. What supports delivery of an ordered byte stream?

A transport protocol that detects gaps and requests missing dataA DNS record containing a backup of the missing packetAn increase in the file size to fill gaps in the received dataA requirement that the network deliver each packet on the same path

Question 9Wi-Fi signal strength is high, but a household’s external connection has failed. What do the bars establish?

A working DNS resolver for each domain the user requestsA reachable route to the remote website’s serverA functioning radio link to the nearby access pointA valid HTTPS certificate for the requested website

Question 10Before sending a request, a browser knows a site’s name but needs a network address. Which step supplies that information?

Asking a router to derive the address from the site’s spellingLooking up records through the domain name systemUsing the domain’s final label as the server’s numeric addressUsing a transport port as the site’s unique network address

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